Function is_meta_phase

plugins/blueprint.cpp:1409–1417

returns true if we could interface with lua and could verify that the given phase is a meta phase

// returns true if we could interface with lua and could verify that the given
// phase is a meta phase
static bool is_meta_phase(color_ostream &out,
                          blueprint_options opts, // copy because we can't const
                          const string &phase) {
    bool ret = false;
    if (!Lua::CallLuaModuleFunction(out, "plugins.blueprint", "is_meta_phase",
            std::make_tuple(&opts, phase), 1, [&](lua_State *L){ret = lua_toboolean(L, -1);}))
        return false;
    return ret;
}

static void write_minimal(ofstream &ofile, const blueprint_options &opts,
                          const bp_volume &mapdata) {